1 This research was supported by grants from the Texas Peanut Producers Board and Valent USA.
Field studies were conducted in various peanut growing regions of Texas and Georgia to study peanut response to flumioxazin alone or in combination with dimethenamid or metolachlor. In south Texas during 1997, flumioxazin plus metolachlor resulted in greater than 45 peanut stunt, while flumioxazin plus dimethenamid caused 20 peanut stunt. This stunting was attributed to cool, wet growing conditions. Peanut yields in flumioxazin plus metolachlor-treated plots were reduced 58 from peanut in the non-treated check. In 1999 and 2000, flumioxazin plus dimethenamid or metolachlor resulted in 15 or greater peanut stunt, but stunting was not constant across weather conditions or locations. In west Texas and Georgia no peanut stunting with flumioxazin was noted. At the Levelland, TX location, flumioxazin at 0.07 kgha plus metolachlor at 1.1 kgha reduced peanut yield 32 when compared with the non-treated check; while at the Pearsall, TX location, metolachlor or dimethenamid at 1.1 kgha, flumioxazin at 0.07 kgha plus dimethenamid at 1.5 kgha, and flumioxazin at 0.1 kgha plus dimethenamid at 1.1 kgha reduced peanut yield 24 to 48 when compared with the non-treated check. No yield reduction was noted in Georgia.
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Keywords: Dual, Frontier, peanut stunting, Valor, yield
How to Cite:
Grichar, W. & Besler, B. & Dotray, P. & Johnson, W. & Prostko, E., (2004) “Interaction of Flumioxazin with Dimethenamid or Metolachlor in Peanut (Arachis hypogaea L.)¹”, Peanut Science 31(1), p.12-16. doi: https://doi.org/10.3146/pnut.31.1.0003